Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Turkey (525)
- Taxonomy (119)
- Fauna (116)
- Distribution (113)
- New species (103)
-
- New record (102)
- New records (99)
- Morphology (67)
- Acari (65)
- Iran (65)
- Growth (54)
- Reproduction (39)
- Black Sea (37)
- Aegean Sea (36)
- Coleoptera (36)
- Diptera (33)
- Hymenoptera (32)
- Age (31)
- Karyotype (29)
- Biodiversity (28)
- Ecology (28)
- Systematics (27)
- Zooplankton (27)
- Checklist (25)
- Rotifera (25)
- Turkey. (25)
- Anatolia (24)
- Abundance (23)
- Diversity (23)
- Braconidae (22)
- Publication Year
Articles 1891 - 1920 of 2109
Full-Text Articles in Life Sciences
A Study On The Pelagic And Demersal Fishes Of İskenderun Bay, Nuri̇ Başusta, Ünal Erdem
A Study On The Pelagic And Demersal Fishes Of İskenderun Bay, Nuri̇ Başusta, Ünal Erdem
Turkish Journal of Zoology
This study was conducted in İskenderun Bay, Mediterranean Sea, between December 1994 and November 1996. Systematic of the fish species inhabiting the bay were examined. Out of 145 species of 111 genera of 67 families there were 19 species belonging to the Chondrictyes and 126 species belonging to the Osteictyes. Of all these species, 22 were Lessepsian migrant fish species.
Age Determination Methods Of Solea Lascaris (Risso, 1810) Inhabiting The Black Sea, Derya Bostanci, Nazmi̇ Polat
Age Determination Methods Of Solea Lascaris (Risso, 1810) Inhabiting The Black Sea, Derya Bostanci, Nazmi̇ Polat
Turkish Journal of Zoology
This study was conducted to determine the most reliable bony structures for ageing Solea lascaris inhabiting the Black Sea. The relations between four different bony structures are presented in tables and figures by scale, vertebra, otolith and broken burnt-otolith ages of 215 samples collected between October 1996 and October 1997. It is concluded the broken-burnt otolith is the most reliable structure for ageing this species. The Von Bertalanffy growth equation was estimated from the broken-burnt otolith age as L_t=24.85 x [1-e-^{0.113(t+3.87)}].
Apoptosis: Programmed Cell Death, Mahmut Çalişkan
Apoptosis: Programmed Cell Death, Mahmut Çalişkan
Turkish Journal of Zoology
Programmed cell death has been found in many multicellular organisms and occurs as a part of normal development as well as in pathological processes associated with some diseases. Programmed cell death, or apoptosis, is the process whereby certain cells are induced to activate their own death or cell suicide. Apoptosis has been described in a wide variety of cell and tissue types from nematodes to mammals. Apoptosis, unlike necrosis, is mediated by the active participation of dying cells. In another words, the dying cells synthesize certain proteins and enzymes to carry out the "suicide" process. The genes involved in apoptosis …
The Growth Characteristics Of Chondrostoma Regium (Heckel, 1843) In Atatürk Dam Lake (Turkey), S. Ahmet Oymak
The Growth Characteristics Of Chondrostoma Regium (Heckel, 1843) In Atatürk Dam Lake (Turkey), S. Ahmet Oymak
Turkish Journal of Zoology
In this study, growth characteristics including as age composition, condition factor, growth, and age-length, age-weight and length-weight relationships, in Chondrostoma regium (Heckel, 1843) living in Atatürk Dam Lake on the Euphrates River were determined. A total of 725 specimens of age groups I-VIII were investigated. The length of females and males was found statistically different only in age group III, while the weights were statistically different in age groups III and IV (P
Faunistic And Taxonomic Studies On The Family Buprestidae (Coleoptera) In Erzurum, Erzincan, Artvin And Kars Provinces I. Acmaeoderinae, Polycestinae And Buprestinae, Göksel Tozlu, Hi̇kmet Özbek
Faunistic And Taxonomic Studies On The Family Buprestidae (Coleoptera) In Erzurum, Erzincan, Artvin And Kars Provinces I. Acmaeoderinae, Polycestinae And Buprestinae, Göksel Tozlu, Hi̇kmet Özbek
Turkish Journal of Zoology
A faunal and taxonomic study on the family Buprestidae (Coleoptera) was conducted in the provinces of Artvin (Central, Ardanuç, Borçka, Hopa, Şavşat and Yusufeli), Erzincan (Central, Tercan and Üzümlü), Erzurum (Central, Aşkale, Çat, Horasan, Ilıca, İspir, Narman, Oltu, Olur, Pasinler, Pazaryolu, Şenkaya, Tortum and Uzundere) and Kars (Digor and Sarıkamış) in 1993-1997. A total of 46 species and subspecies were recorded belonging to 3 subfamilies, namely Acmaeoderinae (12 species), Polycestinae (1) and Buprestinae (33). Of these taxa, Acmaeodera (s.str.) transcaucasica Semenov, Dicerca (s.str.) chlorostigma Mannerheim, Anthaxia (Haplanthaxia) truncata Abeille de Perrin and Acmaeoderella (Carininota) flavofasciata albifrons (Abeille de Perrin) are …
Effects Of Host Species On Some Biological Characteristics Of Apanteles Galleriae Wilkinson (Hym.; Braconidae), Fevzi̇ Uçkan, Adem Gülel
Effects Of Host Species On Some Biological Characteristics Of Apanteles Galleriae Wilkinson (Hym.; Braconidae), Fevzi̇ Uçkan, Adem Gülel
Turkish Journal of Zoology
Koinobiont and solitary, early instar larval endoparasitoid, Apanteles galleriae Wilkinson were reared on two lepidopterous host species, the greater wax moth, Galleriae mellonella (L.) and the small wax moth, Achoria grisella Fabr. under a photoperiod of 12:12 h (D: L) at 25°C and 60 % relative humidity. The parasitoid with three larval instars completed its immature developmental period within 26-28 days when it was reared on G. mellonella and within 25-27 days on A. grisella. The adult parasitoid has no preoviposition period. In the first 24 hours of the adult female life span, 10 to 20 eggs were laid. The …
Macrophyte-Dominated Clearwater State Of Lake Mogan, S. Levent Burnak, Meryem Bekli̇oğlu
Macrophyte-Dominated Clearwater State Of Lake Mogan, S. Levent Burnak, Meryem Bekli̇oğlu
Turkish Journal of Zoology
In this study, the water chemistry and zooplankton community of Lake Mogan studied between March 1997 and April 1998. Small-scale industries, crop-farming, urban settlement of the municipality of Gölbaşı with the untreated raw sewage effluent and recreational activities are examples of the human impact within the catchment and the lake, leading to high loading of DIN and TP into the lake via the inflows. However, the natural wetland with the dense reedbeds (Çölovası or Çökek Bataklığı), located on the southern end of the lake, appear to act as a sink for these nutrients. Therefore, the in-lake concentartions of DIN and …
The Distribution And Fishing Of Two Mediterranean Eledone Spp. (Octopoda: Cephalopoda) In The Aegean Sea, Alp Salman, Tuncer Katagan, Ali̇ Cemal Gücü
The Distribution And Fishing Of Two Mediterranean Eledone Spp. (Octopoda: Cephalopoda) In The Aegean Sea, Alp Salman, Tuncer Katagan, Ali̇ Cemal Gücü
Turkish Journal of Zoology
The spatial distributions of Eledone cirrhosa (Lamarck, 1798) and Eledone moschata (Lamarck, 1798) were examined based on four seasonal trawl surverys carried out between 1991-1992 covering 20-500 meters of the Turkish and international waters in the Aegean Sea. It was found that E. cirrhosa inhabits all depth ranges examined in the northern part, but it was seldom observed in the south. E. moschata, on the other hand, has a basin-wide distribution and solely inhabits the upper 200-meter depth range.
The Acar Oid Mites From The Nests Of The Common Vole (Microtus Arvalis) (Rodentia) Of The Lesser Caucasus Within Azerbaijan, Edmi̇la Ali̇evna Abdullaeva
The Acar Oid Mites From The Nests Of The Common Vole (Microtus Arvalis) (Rodentia) Of The Lesser Caucasus Within Azerbaijan, Edmi̇la Ali̇evna Abdullaeva
Turkish Journal of Zoology
The results are given of a study on Acaroid mites collected in the summer (July-August) from the nests of the common vole (Microtus arvalis) in the subalpine zone in Shahbuz, Lachin, Keebajar and Kedabek regions of Azerbaijan. Under the specific conditions of the high mountain subalpine meadows of Azerbaijan, the fauna of acaroid mites in the nests of rodents is sufficiently diverse. The presented species list includes 19 species belonging to 2 families and 11 genera. In this region, with its extreme climatic conditions, the nests, with a stable microclimate, serve as a concentration and survival site for the acaroid …
Lessepsian Fishes Spreading Along The Coasts Of The Mediterranean And The Southern Aegean Sea Of Turkey, Hati̇ce Torcu, Savaş Mater
Lessepsian Fishes Spreading Along The Coasts Of The Mediterranean And The Southern Aegean Sea Of Turkey, Hati̇ce Torcu, Savaş Mater
Turkish Journal of Zoology
The taxonomy and biological characters of 22 Lessepsian fishes living on the coasts of the Eastern Mediterranean and Aegean Sea were examined and 8 species were determined to have commercial importance. Of these, Upeneus moluccensis and Saurida undosquamis have become economic fishes of the Eastern Mediterranean trawl fisheries, having significant stocks. The species previously misidentified as Upeneus asymmetricus was determined to be Upeneus pori. It has been pointed out that new species can be added to the recorded ones by the consequent influx of Red Sea biota into the Levant.
Short Term Secondary Production And Population Dynamics Of Crustacea Rotifera In Three Different Biotops Of Neusiedler See (Austria), Nuray Emi̇r Akbulut
Short Term Secondary Production And Population Dynamics Of Crustacea Rotifera In Three Different Biotops Of Neusiedler See (Austria), Nuray Emi̇r Akbulut
Turkish Journal of Zoology
This paper describes the population dynamic parameters of the two crustaceans Diaphanosoma mongolianum, Arctodiaptomus spinosus and four rotifer species which are Filinia longiseta, Hexartra mira, Brachionus angularis and Polyarthra vulgaris.
Reproduction Characteristics Of Thinlip Grey Mullet, Liza Ramada(Risso 1826) Inhabiting Akgöl-Paradeniz Lagoons (Göksu Delta), Serap Ergene Gözükara
Reproduction Characteristics Of Thinlip Grey Mullet, Liza Ramada(Risso 1826) Inhabiting Akgöl-Paradeniz Lagoons (Göksu Delta), Serap Ergene Gözükara
Turkish Journal of Zoology
In order to determine the reproduction characteristics of Liza ramada, a fish of economical importance, the GSI, egg diameter, sex maturity, age and sex ratio were examined in 228 specimens caught periodically, between February 1992 and July 1994 in Akgöl-Paradeniz Lagoon. According to the GSI % and egg diameter, the reproduction period of Liza ramada was determinedto be November and December. The lowest GSI % obtained for Liza ramada was 4.99 % in February and the highest values were16.67 % in November and 11.67 % in December. The average egg diameter of Liza ramadaranged from 0.15 to 0.69 mm. It …
A Preliminary Study On The Reproduction Of The Rabbitfish (Siganus Rivulatus (Forsskal, 1775)) In The Northeastern Mediterranean, Hacer Yeldan, Dursun Avşar
A Preliminary Study On The Reproduction Of The Rabbitfish (Siganus Rivulatus (Forsskal, 1775)) In The Northeastern Mediterranean, Hacer Yeldan, Dursun Avşar
Turkish Journal of Zoology
This study was carried out to identify some aspects of the reproductive cycle of the rabbitfish ( Siganus rivulatus) inhabiting the northeastern Mediterranean. For this reason, monthly sampling was conducted between February 1995 and June 1996, and a total of 473 specimens were used. By using the monthly changes in the values of the gonadosomatic index (GSI) and Condition Factor (K), it was found that their reproduction takes place during July and August. The mean diameter of ripe gonadal eggs was 0.44 mm; and mean fecundity and its standard deviation was found to be 434761±181006. Fecundity-total length, fecundity-total weight and …
Toxicity Of Crude Neem Leaf Extract Against Housefly Musca Domestica L. Adults As Compared With Ddvp, Dichlorvos, Mohammad Farahullah Khan, Syed Muzaffar Ahmed
Toxicity Of Crude Neem Leaf Extract Against Housefly Musca Domestica L. Adults As Compared With Ddvp, Dichlorvos, Mohammad Farahullah Khan, Syed Muzaffar Ahmed
Turkish Journal of Zoology
Toxicity of neem extract in comparison with DDVP (Dichlorvos) was determined against the housefly ( Musca domestica L). Neem leaf extract was applied at 5, 10, 20, 40 and 80 microgram/fly and DDVP was treated in 0.1, 0.2, 0.4, 0.8 and 1.6 microgram/fly doses. Lethal dose values were calculated with probit analysis and LD 50 and LD 90 values were found to be 8.4 and 169.8 ug/fly of neem extract respectively, whereas, values of 0.44 and 3.58 ug/fly of DDVP were found for LD 50 and LD 90 against house flies.
Electrophoretic Aspects Of Blood-Serum Proteins Of Apodemus Mystacinus And Apodemus Agrarius (Mammalia: Rodentia) In Turkey, Reyhan Çolak, Ercüment Çolak, Nuri̇ Yi̇ği̇t, Mustafa Sözen, Şaki̇r Özkurt
Electrophoretic Aspects Of Blood-Serum Proteins Of Apodemus Mystacinus And Apodemus Agrarius (Mammalia: Rodentia) In Turkey, Reyhan Çolak, Ercüment Çolak, Nuri̇ Yi̇ği̇t, Mustafa Sözen, Şaki̇r Özkurt
Turkish Journal of Zoology
In this study, globulin and albumin proteins of Apodemus mystacinus and Apodemus agrarius were examined using the SDS-PAGE (sodium dodecyl sulphate-polyacrylamide gel electrophoresis) technique. In A. mystacinus, there were 7-8 bands in the globulin region and 2-3 bands in the prealbumin zone. It was determined that there were variations in both the globulin region and prealbumin zone in populations of A. mystacinus. In specimens of A. agrarius, nine bands appeared in the globulin region, and two bands were observed in the prealbumin zone. These findings showed that A. mystacinus differs from A. agrarius in respect to electrophoretic aspects of albumin …
The Ciliate Fauna In The Digestive System Of Rana Ridibunda (Amphibia: Anura)-Ii Nyctotherus (Nyctotheridae: Heterotrichida), Naci̇ye Gülkiz Şenler, İsmai̇l Yildiz
The Ciliate Fauna In The Digestive System Of Rana Ridibunda (Amphibia: Anura)-Ii Nyctotherus (Nyctotheridae: Heterotrichida), Naci̇ye Gülkiz Şenler, İsmai̇l Yildiz
Turkish Journal of Zoology
A new ciliate species, Nytotherus oektemae n. sp. and common rectal ciliate of anuran amphibians, Nyctotherus cordiformis were isolated from the rectums of Rana ridibunda collected in the vicinity of Van. The morhological characteristics of these Protozoa were described and their similarities and differences were discussed.
Growth Conditions And Stock Analysis Of The Carp (Cyprinus Carpio, Linnaeus 1758) Population In Gölhisar Lake, Ahmet Alp, Süleyman Balik
Growth Conditions And Stock Analysis Of The Carp (Cyprinus Carpio, Linnaeus 1758) Population In Gölhisar Lake, Ahmet Alp, Süleyman Balik
Turkish Journal of Zoology
In this study, growth in the carp population was investigated using samples caught with longline nets of different mesh sizes. Mortality rate and stock analysis were calculated by length frequency data taken from commercial fisheries. The age composition of the samples was from I to VI. The fork lengths were between 10.5 and 49.4 cm, the total weights were found to be between 20.19 and 1922.20 g. and condition factors ranged from 1.298 to 2.388. The total mortality rate (Z) was found to be 1.36±0.10, the natural mortality rate (M) was 0.35 and the fishing mortality rate (F) was 1.01. …
A Review Of Ecological Features Of Fishes Inhabiting Chatkal Biosphere Reserve In Uzbekistan, Ulughbek T. Mirzaev
A Review Of Ecological Features Of Fishes Inhabiting Chatkal Biosphere Reserve In Uzbekistan, Ulughbek T. Mirzaev
Turkish Journal of Zoology
This paper provides brief data on the distribution, morphology, biology and way of life of the fishes inhabiting rivers located in Chatkal Biosphere Reserve. The rivers of this reserve are inhabited by cold-loving fishes adapted to mountain conditions. These fishes are characterized by low fecundity, bigger size of eggs and a slower growth. Most of these fishes are small inhabitants of stony-pebble parts of the rivers and are capable of pressing themselves to the bottom and hiding themselves behind stones.
Laboratory Evaluation Of Bromethalin Against Lesser Bandicoot Rat, Bandicota Bengalensis, Abdul Azi̇z Khan, Syed Waqar Ali̇ Ri̇zvi̇
Laboratory Evaluation Of Bromethalin Against Lesser Bandicoot Rat, Bandicota Bengalensis, Abdul Azi̇z Khan, Syed Waqar Ali̇ Ri̇zvi̇
Turkish Journal of Zoology
Results of no-choice and choice feeding tests against Bandicota bengalensis showed that bromethalin is highly toxic and efficacious rodenticide. However, its susceptibility differed between sexes. In no-choice test minimum time of cent-percent mortality was 1.2 days (range 1-2). The amount of toxicant consumed per rat resulting in complete mortality was 4.92±0.78 and 5.09±0.22 mg/kg in female and male rats respectively. In choice tests, mean days to death was 2.1 (range 1-4 days) and the amount of toxicant consumed per rat averaged 5.56±0.30 mg/kg. The latency period exceeded 210 minutes of the poisoning.
Histological And Histochemical Studies On The Extensor Muscle Of The Pectoral Fin Of Rainbow Trout (Oncorhynchus Mykiss), Fati̇me Geyi̇koğlu, Abdullah Özkaral
Histological And Histochemical Studies On The Extensor Muscle Of The Pectoral Fin Of Rainbow Trout (Oncorhynchus Mykiss), Fati̇me Geyi̇koğlu, Abdullah Özkaral
Turkish Journal of Zoology
In this study, taking the extensor muscle out of the pectoral fin of trout, lipid and mitochondria contents of muscle fibres were examined. Succinic dehydrogenase and Sudan black B stain methods were applied on the sections removed by freezing microtomy. Haematoxylen and eosin staining were also applied on the sections obtained from paraffin blocks. It was observed histologically that nuclei of muscle fibre were located just under the sarcolemma. Three types of fibres red, intermediate and white were identified by the applied histochemical methods. It was observed that this muscle was rich in red and intermediate fibres. As a result, …
Faunistic And Taxonomic Studies On The Family Buprestidae (Coleoptera) In Erzurum, Erzincan, Artvin And Kars Provinces Ii. Sphenoptarinae, Chalcophorinae, Chrysobothrinae, Agrilinae, Cylindromorphinae And Trachyinae, Göksel Tozlu, Hi̇kmet Özbek
Faunistic And Taxonomic Studies On The Family Buprestidae (Coleoptera) In Erzurum, Erzincan, Artvin And Kars Provinces Ii. Sphenoptarinae, Chalcophorinae, Chrysobothrinae, Agrilinae, Cylindromorphinae And Trachyinae, Göksel Tozlu, Hi̇kmet Özbek
Turkish Journal of Zoology
A faunal and taxonomic study on the family Buprestidae (Coleoptera) was carried provinces of Artvin (Central, Ardanuç, Borçka, Hopa, Şavşat and Yusufeli), Erzincan (Central, Tercan and Üzümlü), Erzurum (Central, Aşkale, Çat, Horasan, Ilıca, İspir, Narman, Oltu, Olur, Pasinler, Pazaryolu, Şenkaya, Tortum and Uzundere) and Kars (Digor and Sarıkamış) in 1993-1997. A total of 38 species were recorded belonging to 6 subfamilies, namely Sphenopterinae (7 species), Chalcophorinae (8), Chrysobothrinae (3), Agrilinae (17), Cylindromorphinae (2) and Trachyinae (1). Of these taxa, Sphenoptera (s.str.) ixion Kerremans is a new record for the Turkish fauna. Agrilus (s.str.) aurichalceus Redtenbacher, Coraebus elatus (Fabricius), Coraebus rubi …
Copper, Zinc, Lead And Cadmium Concentrations In The Mediterranean Mussel Mytilus Galloprovincialislamarck,1819 From The Sinop Coast Of The Black Sea, Levent Bat, Ayşe Gündoğdu, Meral Öztürk, Mehmet Öztürk
Copper, Zinc, Lead And Cadmium Concentrations In The Mediterranean Mussel Mytilus Galloprovincialislamarck,1819 From The Sinop Coast Of The Black Sea, Levent Bat, Ayşe Gündoğdu, Meral Öztürk, Mehmet Öztürk
Turkish Journal of Zoology
The concentrations of copper, zinc, lead and cadmium in the living tissue of the Mediterranean mussel Mytilus galloprovincialis from the Sinop coasts of the Black Sea were measured by atomic absorption spectrophotometry for monitoring metal pollution in the coastal water. A statistically significant difference in the concentrations of all metals was observed among four sampling stations. The results were compared with previous studies and discussed.
Specific Composition And Number Of Testaceous Amoebae(Testacea Lobosia, Protozoa) Of Ganlı-Gol Lake, Ilham Alekperov, Nataly Snegovaya
Specific Composition And Number Of Testaceous Amoebae(Testacea Lobosia, Protozoa) Of Ganlı-Gol Lake, Ilham Alekperov, Nataly Snegovaya
Turkish Journal of Zoology
Testaceous amoebae in plankton peryphithon and benthos of the Ganlı-Gol lake in the Baku suburbs were investigated with respect to specific composition and number. Twenty-four of 64 species were recognized as a new faunal assemblage for the Caucasus. The largest diversity and number of species df testaceous amoebae occurred in benthos in silty deposits. Representatives of Difflugiidae, Centropyxidae and Arcellidae families appear to be dominant on the basis of the abundance of species.
A Review On The Control Of Eutrophication In Deep And Shallow Lakes, Meryem Bekli̇oğlu
A Review On The Control Of Eutrophication In Deep And Shallow Lakes, Meryem Bekli̇oğlu
Turkish Journal of Zoology
There has been a much debate about the relative importance of the determination of phytoplankton crops by nutrients (bottom-up control) or by zooplankton grazing (top-down control). Wide acceptance of the importance of nutrient concentrations in water quality deterioration has brought about external nutrient control by which eutrophication is, to some extent, reversible, and which has been proved its effectiveness mostly in deep lakes. In shallow lakes its effectiveness has not been as pronounced, owing to internal nutrient loading. Because the non-linearity of responses of biological systems is much more accentuated in small and shallow lakes. The use of profound effects …
Diurnal Variation Of Water Chemistry Andzooplankton In Little Mere, Cheshire, Uk, In 1993 And 1994, Meryem Bekli̇oğlu, Brian Moss
Diurnal Variation Of Water Chemistry Andzooplankton In Little Mere, Cheshire, Uk, In 1993 And 1994, Meryem Bekli̇oğlu, Brian Moss
Turkish Journal of Zoology
In Little Mere, diurnal sampling of the zooplankton at three different habitats in 1993 provided little evidence to support the data of Timms and Moss (10) that cladocerans move out from refugia at night to graze in open water. The floating-leaved water lily, appeared to be more efficient at providing refuge to D. hyalina in the presence of high planktivore fish predation than the submerged plant beds and the open water. This might be due to unfavourable physical and chemical environmental conditions associated with the water lily bed for fish feeding, a possibility supported by the findings of very low …
Responses Of Meteorus Versicolor Wesm. (Hymenoptera, Braconidae) To The Population Density Of Tephrina Arenacearia Den. Et Schiff. (Lepidoptera. Geomatridae), Ilhama Gudrat Gizi Kerimova, Arifa Akhmed Gizi Abdinbekova
Responses Of Meteorus Versicolor Wesm. (Hymenoptera, Braconidae) To The Population Density Of Tephrina Arenacearia Den. Et Schiff. (Lepidoptera. Geomatridae), Ilhama Gudrat Gizi Kerimova, Arifa Akhmed Gizi Abdinbekova
Turkish Journal of Zoology
The purpose of this research was the determination of the effectiveness of Meteorus versicolor Wesm. in the control of Tephrina arenacearia Den. et Schiff. We studied the behavioral responses of this braconid to changes the number of hosts in laboratory conditions. It was revealed that this parasitoid is distributed proportionally to host population density. M. versicolor can parasitize both the single and accumulated larvae of the host.
The Growth And Reproduction Characteristics Of Chub Leuciscus Cephalus Orientalis (Nordmann, 1840) Living In The River Aras, Mustafa Türkmen, H. İbrahi̇m Hali̇loğlu, Orhan Erdoğan, Ayhan Yildirim
The Growth And Reproduction Characteristics Of Chub Leuciscus Cephalus Orientalis (Nordmann, 1840) Living In The River Aras, Mustafa Türkmen, H. İbrahi̇m Hali̇loğlu, Orhan Erdoğan, Ayhan Yildirim
Turkish Journal of Zoology
In this study, the populations structure, growth and reproduction characteristics of 1091 Leuciscus cephalus orientalis from the Yagan Region of River Aras between December 1995 and November 1997 were investigated monthly. The age composition of this species ranged between I and VIII. Individuals were composed of 48.85% males and 51.15% females. Female individuals attained greater size and age than males. The largest Female captured was 27.5 cm FL and age VIII, while the largest male was 24.1 cm FL and age VIII. Von Bertalanffy growth equations (in length and weight) and length-weight relationships were found as Lt=32.47(1-e -0.1217(t+1.63) ), Wt=502.10(1-e …
Accumulation Of Some Heavy Metals In Tilapia Zillii Organs From Lake Manzalah, Egypt, Mohamed Ali̇ Zyadah
Accumulation Of Some Heavy Metals In Tilapia Zillii Organs From Lake Manzalah, Egypt, Mohamed Ali̇ Zyadah
Turkish Journal of Zoology
The accumulation of copper, zinc, cadmium and lead in flesh, gills, liver and gonads of Tilapia zillii were determined. Fish sizes, sexes and metal accumulation by the fish organs were studied. The levels of those heavy metals are occasionally higher in females than in males, this could be attributed to the fact that females have a higher tendency to accumulate heavy metals in fish 8- 11 cm in length were obtained, while medium sizes of fish (11-13 cm) showed more remarkable concentrations than the other sizes through both seasons and sites. The flesh accumulated low concentrations of heavy metals in …
A Preliminary Review Of The Subfamily Alticinae (Coleoptera, Chrysomelidae) In Turkey, İrfan Aslan, Blagoy Gruev, Hi̇kmet Özbek
A Preliminary Review Of The Subfamily Alticinae (Coleoptera, Chrysomelidae) In Turkey, İrfan Aslan, Blagoy Gruev, Hi̇kmet Özbek
Turkish Journal of Zoology
Distributional data about 234 species and subspecies belonging to 21 genera of Alticinae in Turkey are given. Thirteen of these taxa, Altica lythri Aubé, Aphthona rugipennis Ogloblin, Chaetocnema laevicollis (Thomson), Dibolia rugulosa Redtenbacher, Longitarsus atricillus (Gyllenhal), L. bytinskii Furth, L. jacobaeae (Waterhouse), L. reichei (Allard), L. salviae Gruev, Phyllotreta striolata (Fabricius), Ph. tetrastigma (Comolli), Psylliodes saulcyi Allard, P. testaceiconcolor Heikertinger, and one subspecies, Longitarsus alfierii furthi Gruev are new records for the fauna of Turkey. Four species (Longitarsus artvinus Gruev et Aslan, L. kopdagiensis Gruev et Aslan, Phyllotreta oltuensis Gruev et Aslan, Ph. ozbeki Gruev et Aslan) the orginal descriptions …
Some Morphological Features Of The Rectal Sac Of The Silkworm (Bombyx Mori: Bombycidae), Beri̇a Falakali Mutaf, Gamze Turgay
Some Morphological Features Of The Rectal Sac Of The Silkworm (Bombyx Mori: Bombycidae), Beri̇a Falakali Mutaf, Gamze Turgay
Turkish Journal of Zoology
The silkworm moth escapes from the pupal-protection case by utilizing cocoon-digesting enzymes. The rectal sac was examined in relation to the behaviour of the animal. Pupae and pharate adults were obtained from commercial races and were reared in the laboratory. The ball-shaped rectal sac, easily distinguishable within the abdomen of the silkworm, was found to contain two phased creamy fluid. The occurance and the shape of the organ and the usage of its fluid suggest its role in perforation of the cocoon.